1565141 has 2 divisors, whose sum is σ = 1565142. Its totient is φ = 1565140.

The previous prime is 1565129. The next prime is 1565149. The reversal of 1565141 is 1415651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1500625 + 64516 = 1225^2 + 254^2 .

It is an emirp because it is prime and its reverse (1415651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1565141 - 2¹⁰ = 1564117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1565149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782570 + 782571.

It is an arithmetic number, because the mean of its divisors is an integer number (782571).

2^1565141 is an apocalyptic number.

It is an amenable number.

1565141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1565141 is an equidigital number, since it uses as much as digits as its factorization.

1565141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 23.

The square root of 1565141 is about 1251.0559539845. The cubic root of 1565141 is about 116.1050623658.

It can be divided in two parts, 15 and 65141, that added together give a palindrome (65156).

The spelling of 1565141 in words is "one million, five hundred sixty-five thousand, one hundred forty-one".